Abstract

This paper describes a procedure to obtain analytical expressions for the spurious signals generated in nonlinear transmission
lines with impedance mismatch when they are subject to small-signals. Using these expressions one can rapidly extract the
nonlinear parameters describing the nonlinear effects due to the
conductor, L(i) and R(i), such as in superconductors, and/or the
nonlinear parameters due to the dielectric, C(v) and G(v) such as in ferroelectrics. The resulting closed-form expressions have
been validated by equivalent circuit simulations. Spurious signal
measurements on several coplanar waveguide superconducting
and ferroelectric transmission lines have been explained by the
use of the resulting closed-form expressions.